package cn.edu.lit.jsjxy.CourseExample.chapter8;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class MyDatabaseHelper extends SQLiteOpenHelper
{

    public static final String CREATE_BOOK = "create table Book (" + "id integer primary key " +
            "autoincrement, " + "author text, " + "price real, " + "pages integer, " + "name text)";

    public static final String CREATE_CATEGORY = "create table Category (" + "id integer primary " +
            "key autoincrement, " + "category_name text, " + "category_code integer)";

    private Context mContext;

    public MyDatabaseHelper(Context context, String name, SQLiteDatabase.CursorFactory factory,
                            int version)
    {
        super(context, name, factory, version);
        mContext = context;
    }

    @Override
    public void onCreate(SQLiteDatabase db)
    {
        db.execSQL(CREATE_BOOK);
        db.execSQL(CREATE_CATEGORY);
        // Toast.makeText(mContext, "Create succeeded", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
    {
        db.execSQL("drop table if exists Book");
        db.execSQL("drop table if exists Category");
        onCreate(db);
    }

}
